草酸铵甲酯

methyl 4-(2-hydroxybenzoyl)-1H-pyrrole-2-carboxylate

methyl 2-pyrrol-1-ylacetate

[(噻吩-2-羰基)氨基]乙酸甲酯

(4-氧代-4H-喹唑啉-3-基)-乙酸甲酯